Planning application
20 Ruperra Close Old St Mellons Cardiff CF3 6HX
Works: Extension Small domestic
Read from the description, not a valuation. How we read the register
Permission granted. Work must normally begin within five years of the decision or the permission lapses.
Proposal
New front porch, ground and first floor side extensions, proposed car port and other associated works.
As published by the council, reference 26/00673/HSE
Application record
- Reference
- 26/00673/HSE
- Type
- Householder Planning Permission
- Status
- Decided
- Decision
- Permission Granted
- Received
- 1 Apr 2026
- Validated
- 10 Apr 2026
- Decided
- 2 Jun 2026
- Ward
- PONTPRENNAU AND OLD ST MELLONS
- Decision by
- Delegated to Group Leader
- Postcode
- CF3 6HX
Site history
Applications at this address on the Cardiff register
This site has had 3 applications since 2025: 3 approved, 0 refused.
-
26/01452/NMA Granted
20 Ruperra Close Old St Mellons Cardiff CF3 6HX
Proposed Non-Material Amendment to Planning Permission 26/00673/HSE- Relocation of windows and doors and small infill between the main house and side extension.
-
25/02789/HSE Granted
20 Ruperra Close Old St Mellons Cardiff CF3 6HX
FIrst floor side extensions, ground floor side and rear extension, and relocation of carport, including associated external alterations.
Timeline
Dates from the published record
-
1 Apr 2026
Received by Cardiff
-
10 Apr 2026
Validated
Checked as complete and ready for consideration.
-
2 Jun 2026
Decision issued: Permission Granted
-
22 Jul 2026
Added to PlanIndex
Related applications
Cases linked to this one on the register
1 later application on the register refers to this one:
-
26/01452/NMA Granted
20 Ruperra Close Old St Mellons Cardiff CF3 6HX
Proposed Non-Material Amendment to Planning Permission 26/00673/HSE- Relocation of windows and doors and small infill between the main house and side extension.
Who's behind it
Company information only, from the register and Companies House
KnK Design Studio Ltd Agent, a design practice registered in Cardiff
Active · incorporated 2024 · Cardiff
37 applications on PlanIndex · across 3 councils · 88% granted
Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.
See their track recordDocuments
Plans, drawings, consultee responses and the officer's report
10 documents on file for this application
A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.
Trade members open them from here.
Open the documentsWhat this grant of permission means
Cardiff granted permission on 2 June 2026, subject to any conditions on the decision notice. Work must normally begin within five years or the permission lapses. More in our guide to what happens after a planning decision.
About householder applications
Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.
Nearby applications
Within 500 metres
-
20 Ruperra Close Old St Mellons Cardiff CF3 6HX
FIrst floor side extensions, ground floor side and rear extension, and relocation of carport, including associated external alterations.
Granted Householder Extension 7 docsDomestic -
20 Ruperra Close Old St Mellons Cardiff CF3 6HX
Proposed Non-Material Amendment to Planning Permission 26/00673/HSE- Relocation of windows and doors and small infill between the main house and side extension.
Granted Amendments Extension Windows or glazing 6 docs -
6 Ruperra Close Old St Mellons Cardiff CF3 6HX
First floor side extension, external alterations to ground floor front elevation, single storey side and rear extension. (24/00861/HSE - Approved 09 September 2024 - Subsequently Varied Under 24/01679/NMA):- Variation of Condition 2 (Approved Plans) of Planning Permission 24/00861/HSE to amend the approved scheme as follows: 1) Additional single storey side extension.
Granted Amendments Extension 10 docsSmall domestic -
6 Ruperra Close Old St Mellons Cardiff CF3 6HX
Proposed Non-Material Amendment to Planning Permission 24/00861/HSE - Depth of proposed rear extension increased and sloped roof replaced with balcony area. Minor alterations to the internal layout.
Granted Amendments Extension 18 docs -
Land To The North Of Bridge Road Old St Mellons Cardiff
Construction of 3no. residential dwellings
Withdrawn Outline 16 docs -
Wayside Bridge Road Old St Mellons Cardiff CF3 6UY
Two storey side and rear extension
Refused Householder Extension 6 docsDomestic
Other householder applications
In Cardiff
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26/01907/HSE Awaiting decision
46 Oakley Place Grangetown Cardiff CF11 7EW
Rear dormer roof extension.
-
26/01013/HSE Granted
74 Beulah Road Rhiwbina Cardiff CF14 6LY
Rear, side and front extensions, raised roof ridge height, front and rear dormers and minor internal and external works.
-
26/01611/HSE Granted
6 Dewi Court 47 Cardiff Road Llandaff Cardiff CF5 2ET
Replacement of existing sliding patio doors with french doors, increase height of existing garden boundary walls on 2 sides with trellis and installation of stand alone garden room.
-
26/01592/HSE Granted
20 Meadow Street Pontcanna Cardiff CF11 9PY
Construction of single storey rear wrap around extension.
-
26/01905/HSE Awaiting decision
9 Clos William Rhiwbina Cardiff CF14 6QJ
Single Storey Side/Rear Extension with Internal Alterations. Loft Reconfiguration with Dormers. Detached Garage Enlargement.